Thats an impossible question to answer for sure. A lot depends on the exact model you have. The same size J3 from two different mfg's could fly very differently.
Setup (CG, throws, expo settings, decolage, how straight the model was built, etc) and trimming (CG, up/down thrust, etc) have a lot to do with it too. Any plane can be setup to the mild side or the wild side and there can be a very large difference in how the model flys.
So, there is no way to know for sure until you try it.
I can tel you that there are a few very general things that bipes tend to have in common - but not all by any means.
They tend to be shorter coupled than mono planes which makes them faster responding to control inputs. They can be twitchy on the sticks and will likely roll, yaw and pitch faster.
The extra drag makes them bleed off speed faster when power is off. In other words, they usually dont glide for crap
But like I said, with minor changes in things like CG, trim, decolage, up/down thrust, etc - to the bipe and the cub, they could trade places as far as how they handle.
So the bipe might easily be a kitty cat compared to the cub - or it could be a wild beast